Question

Difference btw gram positive and gram negative bacteria

Answer 1

Answer:

Gram positive bacteria:

1) The bacteria remain coloured blue or purple with Gram staining even after washing with alcohol.

2) Outer membrane called glycocalyx is absent.

3) Cell wall is 20-80 nm thick.

4) The wall is smooth.

5) Teichoic acid present in cell wall.

examples: few pathogenic bacteria-

Bacillus, clostridium, Lactobacillus, streptococcus, etc...

Gram negative bacteria:

1) The bacteria do not retain stain when washed with alcohol.

2) Outer membrane, glycocalyx is present.

3) cell wall is 8-12 nm thick.

4) walll is wavy and comes in contact with plasmalemma only at a few loci.

5) Teichoic acid absent in cell wall.

examples: most pathogenic bacteria- E. coli, salmonella, vibrio, etc...

please mark as brainleast answer...